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An alpha- particle and a proton having t...

An `alpha`- particle and a proton having the same momentum enter a region of uniform magnetic field and move in circular paths. The ratio of the radii of curvature of their circular paths `r_(a)//r_(p)` in the field is

A

1

B

`1//4`

C

`1//2`

D

4

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CHHAYA PUBLICATION-ELECTROMAGNETISM -EXERCISE
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